<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>Welcome</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      background: #e0f2fe;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
    }
    .welcome-box {
      text-align: center;
      background: white;
      padding: 2rem;
      border-radius: 10px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    .welcome-box h1 {
      color: #2563eb;
    }
  </style>
</head>
<body>

  <div class="welcome-box">
    <h1>Welcome!</h1>
    <p>You have successfully logged in.</p>
  </div>

</body>
</html>
